126236042 has 4 divisors (see below), whose sum is σ = 189354066. Its totient is φ = 63118020.

The previous prime is 126236039. The next prime is 126236059. The reversal of 126236042 is 240632621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119880601 + 6355441 = 10949^2 + 2521^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31559009 + ... + 31559012.

Almost surely, 2^126236042 is an apocalyptic number.

126236042 is a deficient number, since it is larger than the sum of its proper divisors (63118024).

126236042 is an equidigital number, since it uses as much as digits as its factorization.

126236042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63118023.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 126236042 is about 11235.4813871058. The cubic root of 126236042 is about 501.6426534693.

Adding to 126236042 its reverse (240632621), we get a palindrome (366868663).

The spelling of 126236042 in words is "one hundred twenty-six million, two hundred thirty-six thousand, forty-two".